Metrics & Alerting

Every good system has metrics and alerting, and my homelab is no different!

Stack

My metrics and alerting system makes use of a couple of components:

• Grafana for displaying the data
• Prometheus as a time series database
• Various exporters
  • prometheus-node-exporter for performance metrics on each node
  • fail2ban_exporter for fail2ban jail metrics on zeus
  • openvpn_exporter for VPN connection monitoring and logging on zeus
  • rtorrent_exporter for monitoring rtorrent data on hermes

Alerting

I use Grafana's alerting system to post to a Discord webhook to alert me of any issues.

This works quite well, however it displays slightly ugly. There may be a way to pretty it up, but I have yet to find out how.

Current Alerts

Alert Name	Trigger
High CPU Usage	15m load average is greater than the CPU core count minus 1